A learner freezes at a busy roundabout and the car is about to roll into circulating traffic. What is the correct instructor action?

1. Wait to see if the learner recovers, to build independence
2. Use the dual brake immediately, make the car safe, then briefly explain the freeze and rebuild the approach in a quieter place
3. Shout the entire priority rule while still rolling forward
4. Open the door and step out into the roundabout